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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Difference Between Button/Cut Rifling?
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<blockquote data-quote="Michael Eichele" data-source="post: 348216" data-attributes="member: 1007"><p>Not true. When grooves are cut they are just that. Cut. Material is actually cut away. With a button, there is no metal removal. The button displaces the metal not removes it.</p><p></p><p>On a side note, some cut rifle barrel manufacturers use equipment that wont give you the exact twist you want. For instance, if you want a 10 twist you may get a 10.2 twist or a 9.8 twist and or some variance up and down the bore. Other manufacturers use equipment that can get the twist to a few thousandths of an inch accurate. It will depend on the equipment used and the nut behind it. So long as a good uniform piece of steel is used, a button will create a very accurate and uniform twist. </p><p></p><p>When it comes to stress, all of the good button barrel makers have procedures either before or after the bore is made to prevent or eliminate stress. They are also very tight lipped about it.</p><p></p><p>A button rifled barrel typically has a much smoother finish when made than a cut rifled barrel. HOWEVER, with modern lapping techniques, the finished product is very good for both.</p><p></p><p>Something not mentioned previously is that button barrels seem to hold up to the heat and flame of the hotter barrel burners. Dont ask me why. I dont know why. I have heard this several times and have owned one button 300 RUM barrel and one cut 300 RUM barrel. The cut barrel didnt hold a candle to the button barrel in regards to throat and bore life which is consistent with the statements I have heard.</p><p></p><p>As far as accuracy is concerned I have seen phenominal accuracy out of all of my cut and buttoned barrels. They have all cleaned up super easy as well.</p></blockquote><p></p>
[QUOTE="Michael Eichele, post: 348216, member: 1007"] Not true. When grooves are cut they are just that. Cut. Material is actually cut away. With a button, there is no metal removal. The button displaces the metal not removes it. On a side note, some cut rifle barrel manufacturers use equipment that wont give you the exact twist you want. For instance, if you want a 10 twist you may get a 10.2 twist or a 9.8 twist and or some variance up and down the bore. Other manufacturers use equipment that can get the twist to a few thousandths of an inch accurate. It will depend on the equipment used and the nut behind it. So long as a good uniform piece of steel is used, a button will create a very accurate and uniform twist. When it comes to stress, all of the good button barrel makers have procedures either before or after the bore is made to prevent or eliminate stress. They are also very tight lipped about it. A button rifled barrel typically has a much smoother finish when made than a cut rifled barrel. HOWEVER, with modern lapping techniques, the finished product is very good for both. Something not mentioned previously is that button barrels seem to hold up to the heat and flame of the hotter barrel burners. Dont ask me why. I dont know why. I have heard this several times and have owned one button 300 RUM barrel and one cut 300 RUM barrel. The cut barrel didnt hold a candle to the button barrel in regards to throat and bore life which is consistent with the statements I have heard. As far as accuracy is concerned I have seen phenominal accuracy out of all of my cut and buttoned barrels. They have all cleaned up super easy as well. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Difference Between Button/Cut Rifling?
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